X-ray imaging apparatus and program

摘要

According to one embodiment, an X-ray imaging apparatus includes an X-ray generation unit, an X-ray collimator, a dose detection unit, and a dose reduction rate calculation unit. The X-ray generation unit irradiates the object with X-rays. The X-ray collimator limits an X-ray irradiation range of the X-ray generation unit. The dose detection unit detects the X-rays that have passed through the X-ray collimator. The dose reduction rate calculation unit calculates a reduction rate of an exposure dose of the object based on a value detected by the dose detection unit in X-ray imaging before the X-ray irradiation range is limited by the X-ray collimator and a value detected by the dose detection unit in X-ray imaging after the X-ray irradiation range is limited by the X-ray collimator.

主权项

1. An X-ray imaging apparatus for performing X-ray imaging of an object and acquiring an X-ray fluoroscopic image, comprising:
an X-ray generation unit configured to irradiate the object with X-rays; an X-ray collimator configured to limit an X-ray irradiation range of the X-ray generation unit; a dose detection unit configured to detect the X-rays that have passed through the X-ray collimator; a dose reduction rate calculation unit configured to calculate a reduction rate of an exposure dose of the object based on a value detected by the dose detection unit in X-ray imaging before the X-ray irradiation range is limited by the X-ray collimator and a value detected by the dose detection unit in X-ray imaging after the X-ray irradiation range is limited by the X-ray collimator; a display unit configured to display a graph based on the reduction rate, wherein the display unit displays at least one of a full field imaging expected cumulative value graph and a limited field imaging expected cumulative value graph as the graph, the full field imaging expected cumulative value graph representing time-rate change in a cumulative value of the exposure dose when assuming that X-ray imaging is performed without limitation of the X-ray irradiation range by the X-ray collimator from a current point, and the limited field imaging expected cumulative value graph representing time-rate change in a cumulative value of the exposure dose when assuming that X-ray imaging is performed with limitation of the X-ray irradiation range by the X-ray collimator from the current point.